How to make http post. No libcurl?

[MosheSmartAmr]

Hi, all!

Have nRF9160. 

I'm using http sample as template to make http requests get/post. I send it without any lib to build requests. 
I can't attach libcurl to nRF9160, and as I understand it is now impossible to using libcurl on nRF9160. 

Maybe someone can suggest something to making http requests?

[Vidar Berg]

Hi,

I'm not sure if it's possible to port libcurl to nRF9160, but you can use the socket API to make HTTP requests. A colleague has made a HTTP example using the Socket API that's available here: https://github.com/Rallare/fw-nrfconnect-nrf/tree/nrf9160_samples/samples/nrf9160/http. This sample demonstrates how you can send a GET request. For POST requests you can use the following template along with snprintf/sprintf.

#define HTTP_HOST example.com
#define HTTP_PATH <post url>
#define TEST_STRING = "Hello from nrf91"

#define POST_TEMPLATE "POST %s? HTTP/1.1\r\n"\
		"Host: %s\r\n"\
		"Connection: keep-alive\r\n"\
		"Content-Type: text/plain\r\n"\
		"Content-length: %d\r\n\r\n"\
		"%s"

/*Prepare POST request*/
send_data_len = snprintf(send_buf,
				         500, /*total length should not exceed MTU size*/
				         POST_TEMPLATE, HTTP_PATH,
				         HTTP_HOST, strlen(TEST_STRING),
				         TEST_STRING);

/*Send post request*/
blocking_send(client_fd, send_buf, send_data_len, 0);

Edit: defined TEST_STRING 

[DennisNG]

HI, does this example work for thingy91 ? 

[Vidar Berg]

I haven't tested, but it should work as long as you build it for the thingy board. 

[Hoang]

hi DennisNG

You want http post,is it right?

[Hoang]

hi DennisNG

This is the one http post, I m using to run on the THINGY:91

thingy_91_http_23sept.zip

run with ncs_master branch. 

Hope it can help

BR, 

Hoang Nguyen

[DennisNG]

Thanks Hoang! I'll give it a shot. 

[DennisNG]

Hi Hoang,

Your code works on Thingy:91 !.

I'm able to flash this in and I could see that its updating ur server! [Sorry for using it]

However, I'm having some issues trying to attach my J-link Debugger. It's always giving me a fault when I attach and run. I'm setting a break point in main but it never gets there. 

I'm very new with Zephyr.. thanks for bearing with me.

br

Dennis

[Hoang]

hi DennisNG

DennisNG said:

Your code works on Thingy:91 !.

I'm able to flash this in and I could see that its updating ur server! [Sorry for using it]

thats ok, I saw it. No problem for me. 

About J-link Debugger problem, Vidar Berg will help you, I dont use it, so I dont know

Good luck

Hoang Nguyen

[DennisNG]

Thanks Hoang! 

appreciate the help!

br

Dennis

[Vidar Berg]

DennisNG, please create a new thread for the debugging issue and try to include relevant information about your setup. E.g., what jlink programmer you use, debug log, etc.